Most dengerous virus

It will also use the system resources to propagate itself to other machines through the Internet and infect others automatically.

This led to more than a million infections , taking out critical infrastructures, such as airlines, news agencies, public transportation, hospitals, public transport, etc. Jaschen was tried as a minor and received a 21 month suspended sentence. Zeus is a Trojan horse made to infect Windows computers so that it will perform various criminal tasks. The most common of these tasks are usually man-in-the-browser keylogging and form grabbing. The majority of computers were infected either through drive-by downloads or phishing scams.

First identified in , it managed to compromise thousands of FTP accounts and computers from large multinational corporations and banks such as Amazon, Oracle, Bank of America, Cisco, etc. Controllers of the Zeus botnet used it to steal the login credentials of social network, email and banking accounts. The entire operation was sophisticated, involving people from around the world to act as money mules to smuggle and transfer cash to the ringleaders in Eastern Europe.

In late , the creator of Zeus announced his retirement but many experts believe this to be false. Also known as Downup or Downadup , Conficker is a worm of unknown authorship for Windows that made its first appearance in The name comes form the English word, configure and a German pejorative.

It infects computers using flaws in the OS to create a botnet. The malware was able to infect more than 9 millions computers all around the world, affecting governments, businesses and individuals. The worm works by exploiting a network service vulnerability that was present and unpatched in Windows. Once infected, the worm will then reset account lockout policies, block access to Windows update and antivirus sites, turn off certain services and lock out user accounts among many.

Then, it proceeds to install software that will turn the computer into a botnet slave and scareware to scam money off the user. Microsoft later provided a fix and patch with many antivirus vendors providing updates to their definitions. Believed to have been created by the Israeli Defence Force together with the American Government, Stuxnet is an example of a virus created for the purpose of cyberwarfare , as it was intended to disrupt the nuclear efforts of the Iranians.

The computer worm was designed to attack industrial Programmable Logic Controllers PLC , which allows for automation of processes in machinery. It specifically aimed at those created by Siemens and was spread through infected USB drives. It altered the speed of the machinery, causing it to tear apart. Siemens eventually found a way to remove the malware from their software. It was named by McAfee employee Craig Schmugar, one of the people who had originally discovered it.

The worm spreads itself by appearing as an email transmission error and contains an attachment of itself. The payload itself is twofold: first it opens up a backdoor to allow remote access and second it launches a denial of service attack on the controversial SCO Group. It was believed that the worm was created to disrupt SCO due to conflict over ownership of some Linux code.

CryptoLocker is a form of Trojan horse ransomware targeted at computers running Windows. It uses several methods to spread itself , such as email, and once a computer is infected, it will proceed to encrypt certain files on the hard drive and any mounted storage connected to it with RSA public key cryptography.

While it is easy enough to remove the malware from the computer, the files will still remain encrypted. The only way to unlock the files is to pay a ransom by a deadline. If the deadline is not met, the ransom will increase significantly or the decryption keys deleted. The ransom operation was eventually stopped when law enforcement agencies and security companies managed to take control part of the botnet operating CryptoLocker and Zeus.

Evgeniy Bogachev, the ring leader, was charged and the encryption keys were released to the affected computers. From data collected from the raid, the number of infections is estimated to be ,, with the number of those who paid the ransom to be at 1. Though not as damaging as the rest of the malware on this list, this is one of the few Mac malware to have gain notoriety as it showed that Macs are not immune.

The Trojan was first discovered in by antivirus company Intego as a fake Flash install. In its newer incarnation, a user simply needs to have Java enabled which is likely the majority of us. The combination of smoking and drinking is especially dangerous and increases the risk of cancer up to a hundredfold.

Red meat can cause intestinal cancer. The exact cause has not yet been determined, but long-term studies show a significant correlation between the consumption of red meat and intestinal cancer. Beef is especially dangerous, but even pork can cause cancer to a minor degree. Meat consumption increases the risk of cancer one and a half times.

Fish, however, prevents cancer. When barbecuing meat, carcinogenic substances are released, such as polycyclical aromatic hydrocarbons. It has been proven in animal experiments that these chemical compounds can cause tumors. However, long-term studies with humans have not yet unambiguously proven the same. A good diet consisting of vegetables, fruits and dietary fibers can prevent cancer. However, when conducting long-term studies researchers found that a healthy diet has less impact on cancer prevention than previously assumed.

It only decreases the risk of getting cancer by a maximum of 10 percent. While sunscreen protects the skin from sunburn, the skin absorbs too much radiation as soon as it starts getting tanned. X-rays harm genomes.

With an ordinary radiogram the exposure is only minor. Magnetic resonance imaging is harmless. Human papillomaviruses can cause cervical cancer. Hepatitis B and C can cause hepatocytes to degenerate. The bacterium helicobacter pylori pictured above settles in your stomach and can cause stomach cancer.

But not all hope is lost. You can get vaccinated against many of these pathogens and antibiotics help fight helicobacter pylori. The oral contraceptive pill slightly increases the risk of getting breast cancer, but at the same time it strongly decreases the risk of getting ovarian cancer. All in all the pill is more protective than harmful, at least when it comes to cancer. Half of all cancer cases are caused by the wrong genes or simply age. Brain cancer is particularly likely to be inherited.

The immune system needs many different types of fuel. Fruit and vegetables provide them. Your diet should be healthy and colorful: Oranges, red peppers, green leafy vegetables and red cabbage provide a potpourri of vitamins, and are especially rich in natural vitamin C.

In order to ensure your immune system is top-top, make sure you have all the necessary immunizations. Adults often forget to refresh vaccinations they had when they were young.

Check if you need booster shots for tetanus, diphtheria, whooping cough, polio, hepatitis, pneumococcus, meningitis, measles, mumps, rubella, the flu and others.

Be sure to talk to your doctor! Scientific studies suggest that regular muscle training jogging, nordic or pole walking, taking a stroll , three times a week for 20 minutes can boost your defenses. But be careful: overdoing it can also drain your immune system. Sufficient sleep doesn't just allow your body to recuperate.

During the slow-wave sleep phase, neurotransmitters are released and the immune system springs into action. Studies show that good spirits and a zest for life promote a strong immune system. Laughing and playing don't just provide for a better quality of life, they also boost the body's defenses. Negative stress activates the release of adrenalin and cortisol. These hormones can paralyze the immune system. Sensible stress and time management allows the body to rest and replenish new energy.

Selective relaxation exercises like meditation, autogenic training and yoga can significantly boost the immune system. Taking walks in the fresh air gives you a change of temperature and exercise - both stimulate the body's defense systems. Mucous membranes also benefit from improved circulation and the increased humidity makes it easier to fight off attacks.

Studies have shown that burning up short chain sugars like fructose and glucose uses up many vitamins that are no longer available to the body. Alternating hot and cold showers help regulate body heat and improve blood flow. An invigorating massage with a massage sponge or brush stimulates the immune system even more. Malaria, dengue fever, zika — mosquitoes aren't just annoying when they buzz around your ear at night, they can also infect us with countless illnesses.

On World Mosquito Day, here are some of the most dangerous ones. Aeroplanes allow us to travel all over the world. We can cover vast distances in a short space of time. But often when we fly, there are thousands of potentially harmful viruses tagging along for the journey.

Amid the ongoing spread of Dengue fever within and even outside the tropics, another mosquito-borne illness has disease specialists alarmed. DW takes a look at the basic facts surrounding the Zika virus. Visit the new DW website Take a look at the beta version of dw. Go to the new dw. More info OK. Wrong language? Change it here DW. COM has chosen English as your language setting.

COM in 30 languages. Deutsche Welle. Audiotrainer Deutschtrainer Die Bienenretter. Science Top 10 most dangerous viruses in the world Bird flu, Ebola and Zika - there seems to be news on a new dangerous virus almost every day. Read more: Spy assassinations: The top five deadly poisons Just how dangerous is mercury, anyway?